Performance analysis of both WIMAX and LTE technologies Shuai Ma To cite this version: Shuai Ma. Performance analysis of both WIMAX and LTE technologies. 2013. hal-00861079 HAL Id: hal-00861079 https://hal.archives-ouvertes.fr/hal-00861079 Submitted on 11 Sep 2013 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Master MDM Internship Performance analysis of both WIMAX and LTE technologies Shuai MA Supervisor :Salima Hamma Academic year: 2012/2013 Laboratory:IRCCyN/IVC 1 Abstract…………………………………………………………………………4 1 WiMAX technology…………………………………………………………..5 1.1 Introduction of WiMAX……………………………………………………5 1.2 PHY layer in WiMAX....................................................................................6 1.2.1 OFDM.............................................................................................6 1.2.2 OFDMA..........................................................................................7 1.2.3 Antenna Techniques.........................................................................9 1.2.4 Physical Channelization..................................................................10 1.3 MAC layer in WiMAX..................................................................................11 1.4 Quality of Service in WiMAX.......................................................................11 1.4.1 Channel-Unaware Schedulers.........................................................13 1.4.2 Channel-Aware Schedulers.............................................................14 2 LTE technology.................................................................................................16 2.1 Introduction of LTE………………………………………………………...16 2.2 PHY layer in LTE..........................................................................................17 2.2.1 OFDMA and SC-FDMA................................................................17 2.2.2 Multiple Antenna Techniques.........................................................18 2.2.3 Physical Channelization.................................................................18 2.3 MAC Layer in LTE.......................................................................................19 2.4 Quality of Service in LTE.............................................................................20 2.4.1 Scheduling......................................................................................21 2.4.2 Channel-unaware schedulers..........................................................21 2.4.3 Channed-aware schedulers.............................................................22 2.4.4 Semi-persistent Scheduling for VoIP support schedulers...............22 2.4.5 Energy-aware schedulers................................................................22 3.Comparision between WiMAX and LTE.........................................................23 3.1 Architecture...................................................................................................23 3.2 Frame structure.............................................................................................27 3.3 MIMO technology…………………………………………………………28 3.4 MAC Layer...................................................................................................28 3.5 Multiple Access Technology.........................................................................31 3.6 QoS...............................................................................................................32 4 Connection Admission Control algorithm (CAC) and Two-Level Scheduling Algorithm(TLSA)...............................................................................................33 4.1 Pre-processor.................................................................................................33 4.2 Queue Management......................................................................................34 4.3 Traffic policing..............................................................................................34 4.4 Connection Admission Contrlo(CAC)..........................................................34 4.5 Two-Level Scheduling Algorithm.................................................................35 4.5.1 Inter-Class Scheduling...................................................................35 4.5.2 Intra-Class Scheduling...................................................................36 5 Simulation of Two-level scheduling algorithm in QualNet………………….38 5.1 QualNet Introduction………………………………………………………39 5.1.1 QualNet Architecture……………………………………………..40 2 5.1.2 Scenario-based Network Simulation……………………………..41 5.1.3 General Approach………………………………………………...41 5.1.4 Files Associated with a Scenario………………………………....41 5.2 Implementation of TLSA in QualNet………………………………………42 5.2.1 Noise factor………………………………………………………42 5.2.2 Fading factor……………………………………………………..43 5.2.3 Shadowing factor………………………………………………...45 5.3 Analyse of the simulation…………………………………………………..45 6. Conclusion…………………………………………………………………..50 Reference………………………………………………………………………51 3 ABSTRACT Nowadays, mobile communication has become the most potential with great demand technology in the field of communication. It has been through three main parts in the history. The first generation is from 80s in the 20th century, simulation and Frequency Division Multiple Access (FDMA) technology was mainly used in that time. Then the second generation (2G) originated in the early period of 90s, Time Division Multiple Access (TDMA) and Code Division Multiple Access (CDMA) technology became the leading role at that time. After that he third generation could offer wider frequency band comparing to the first two generation. With this new technology, not only voice can be transmitted, but also data with a high speed. Although the third generation mobile communication standard is more powerful than existing wireless technologies, it also faces competition, incompatible standards and other issues. Therefore, the research of the fourth generation mobile communication systems (4G) comes into being. The 4G should obtain more advantages in communication range, quality and any other aspects than the former communication technology. Meanwhile, the new generation is supposed to have some features such as high speed, high flexibility and high compatibility. Two emerging technologies, the IEEE 802.16 WiMAX(Worldwide Interoperability for Microwave Access) and the 3GPP LTE(Third Generation Partnership Project Long Term Evolution) purpose to meet the requirements of 4G standards and provide mobile voice, video and data services by promoting low cost deployment and service models through Internet friendly architectures and protocols. Both of them are being considered as candidates for the 4G mobile networks. In chapter 1 and 2 of this paper, we present the overview for the WiMAX and LTE technology respectively though their physical layer and MAC layer structure. Then we introduce the QoS mechanism of them which are an important part of these two technologies. The comparison of WiMAX and LTE in architecture, frame structure, multiple access technology and other features is shown in chapter 3. In chapter 4, a two-level scheduling algorithm (TLSA) for the base station uplink scheduler which is a channel-unaware algorithm in WiMAX is provided. At the end, we use a simulation tool which is QualNet to test the performance of this scheduling algorithm when the physical channel condition changes in chapter 5. Here three parameters such as noise factor, fading factor and shadowing factor are used in this experiments. We offer the analysis of the experiment finally. 4 1.WiMAX technology 1.1 Introduction of WiMAX IEEE 802.16 is a set of telecommunications technology standards aimed at providing wireless access over long distances in a variety of ways --from point-to-point links to full mobile cellular type access. It is also called Wireless MAN which can cover a metropolitan area of several kilometers. WiMAX(Worldwide Interoperability for Micro Wave Access) is a wireless communications standard which was years in the making, was finalized in June 2004.It is made by WiMAX Forum which is a group of 400+ networking equipment vendors, service providers, component manufacturers and users that decide which of the numerous options allowed in the IEEE 802.16 standards should be implemented so that equipment from different vendors will inter-operate. WiMAX is designed to provide 30 to 40 megabit-per-second data rates, with the 2011 update providing up to 1Gbit/s for fixed stations. The most popular description of WiMAX is "a standards-based technology enabling the delivery of last mile wireless broadband access as an alternative to cable and DSL". WiMAX offers a point-to-point range of 30 miles (50 km) with a throughput of 72 Mbps while supporting a non-line-of-sight (NLOS) range of 4 miles and, in a point-to-multipoint distribution, the model can distribute nearly any bandwidth to almost any number of subscribers, depending on subscriber density and network architecture. WiMAX will enable an improved standard of living